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The practical significance of this selectivity cannot be overstated
These savings accumulate significantly over long-term usage
The absorption process involves a complex mechanism requiring an acidic stomach environment, pepsin, and intrinsic factor, which facilitates the absorption of vitamin B12 in the intestines
Generally, individuals can expect to experience the effects of a B12 injection for several days to a few weeks before requiring another dose
"but I do find it weird that my B12 is nonexistent and yet my RBC, MCV, and MCH are normal." Low B12 can lead to enlarged red blood cells (macrocytosis)
A peer-reviewed study by the National Institutes of Health shows that B12 absorption depends on the presence of intrinsic factors in the stomach
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